class_docstr: y = a * x + b
class_docstr_tok: ["y","=","a","*","x","+","b"]
code: def __len__(self):
      return len(self.x)
  
file_path: ray/python/ray/train/examples/pytorch/torch_linear_example.py
imports: import argparse
  import os
  import tempfile
  import numpy
  import torch
  import torch.nn
  import ray.train
  from ray.train import Checkpoint, RunConfig, ScalingConfig
  from ray.train.torch import TorchTrainer
label_desc: Use image node_id 3 for calling the LinearDataset obj's underlying member method code with example usage: obj.__len__() and returns: len